Index: applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/TileRange.java
===================================================================
--- applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/TileRange.java	(revision 33207)
+++ applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/TileRange.java	(revision 33208)
@@ -23,4 +23,12 @@
     }
 
+    public TileRange(TileRange r) {
+        minX = r.minX;
+        minY = r.minY;
+        maxX = r.maxX;
+        maxY = r.maxY;
+        zoom = r.zoom;
+    }
+
     protected double tilesSpanned() {
         return Math.sqrt(1.0 * this.size());